Fix commit links for 1.11 and 1.10 in changelog

CHANGELOG.md

 ## 1.12.0
 
 ### Core library changes
 
 * `dart:html`
   * `NodeTreeSanitizer` added the `const trusted` field. It can be used
     instead of defining a `NullTreeSanitizer` class when calling
     `setInnerHtml` or other methods that create DOM from text. It is
     also more efficient, skipping the creation of a `DocumentFragment`.
 
@@ skipping 35 matching lines @@
     [a192ef4](https://github.com/dart-lang/sdk/commit/a192ef4acb95fad1aad1887f59eed071eb5e8201)
   * `int` added a `modInverse` method.
     [f6f338c](https://github.com/dart-lang/sdk/commit/f6f338ce67eb8801b350417baacf6d3681b26002)
   * `StackTrace` added a `fromString` constructor.
     [68dd6f6](https://github.com/dart-lang/sdk/commit/68dd6f6338e63d0465041d662e778369c02c2ce6)
   * `Uri` added a `directory` constructor.
     [d8dbb4a](https://github.com/dart-lang/sdk/commit/d8dbb4a60f5e8a7f874c2a4fbf59eaf1a39f4776)
   * List iterators may not throw `ConcurrentModificationError` as eagerly in
     release mode. In checked mode, the modification check is still as eager
     as possible.
-    [r45198](https://code.google.com/p/dart/source/detail?r=45198)
+    [r45198](https://github.com/dart-lang/sdk/commit/5a79c03)
 
 * `dart:developer` - **NEW**
   * Replaces the deprecated `dart:profiler` library.
   * Adds new functions `debugger` and `inspect`.
     [6e42aec](https://github.com/dart-lang/sdk/blob/6e42aec4f64cf356dde7bad9426e07e0ea5b58d5/sdk/lib/developer/developer.dart)
 
 * `dart:io`
   * `FileSystemEntity` added a `uri` property.
     [8cf32dc](https://github.com/dart-lang/sdk/commit/8cf32dc1a1664b516e57f804524e46e55fae88b2)
   * `Platform` added a `static resolvedExecutable` property.
@@ skipping 28 matching lines @@
   of dart2js
 
 ## 1.10.0 – 2015-04-29
 
 ### Core library changes
 
 * `dart:convert`
   * **POTENTIALLY BREAKING** Fix behavior of `HtmlEscape`. It no longer escapes
   no-break space (U+00A0) anywhere or forward slash (`/`, `U+002F`) in element
   context. Slash is still escaped using `HtmlEscapeMode.UNKNOWN`.
-  [r45003](https://code.google.com/p/dart/source/detail?r=45003),
-  [r45153](https://code.google.com/p/dart/source/detail?r=45153),
-  [r45189](https://code.google.com/p/dart/source/detail?r=45189)
+  [r45003](https://github.com/dart-lang/sdk/commit/8b8223d),
+  [r45153](https://github.com/dart-lang/sdk/commit/8a5d049),
+  [r45189](https://github.com/dart-lang/sdk/commit/3c39ad2)
 
 * `dart:core`
   * `Uri.parse` added `start` and `end` positional arguments.
 
 * `dart:html`
   * **POTENTIALLY BREAKING** `CssClassSet` method arguments must now be 'tokens', i.e. non-empty
   strings with no white-space characters. The implementation was incorrect for
   class names containing spaces. The fix is to forbid spaces and provide a
   faster implementation.
   [Announcement](https://groups.google.com/a/dartlang.org/d/msg/announce/jmUI2XJHfC8/UZUCvJH3p2oJ)
@@ skipping 247 matching lines @@
     they will keep the Dart process alive until they time out. This fixes the
     handling of persistent connections. Previously, the client would shut down
     immediately after a request.
 
   * **Breaking change:** `HttpServer` no longer compresses all traffic by
     default. The new `autoCompress` property can be set to `true` to re-enable
     compression.
 
 * `dart:isolate`: `Isolate.spawnUri` added the optional `packageRoot` argument,
   which controls how it resolves `package:` URIs.